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Staying on top of SEO marketing campaigns is challenging. And that’s where keyword clustering tools come into play.

Keyword clustering tools are programs that organize keywords into topical categories. It involves grouping similar intent keywords so you can use them throughout your website for better search engine rankings.

There are a few different types of keyword clustering tools available, so it’s important to choose the one that best suits your needs. Some tools allow you to cluster by country, region, topic, or other criteria.

Before we begin our list of keyword clustering tools, it’s essential to understand keyword clustering first.

What is Keyword Clustering?

Keyword clustering is an SEO term that refers to grouping keywords with the same search intent. It’s an advanced SEO practice; however, most SEOs miss it. Keyword grouping even helps to make better SEO decisions.

Consider a common scenario wherein marketers and editors find it difficult to break content into sub-topics. With the help of keyword grouping, it becomes easy to use multiple keywords in the same content rather than creating multiple content pieces. Simply, it means you don’t need to create separate articles for keywords that match your primary keywords.

Keyword clustering enables marketers, content writers, and web developers to effectively organize, target, and optimize content for search engine optimization. By clustering related keywords, marketers can create more structured and effective campaigns targeting the audience they are looking for.

If executed correctly, keyword grouping has the potential to rank for low-difficulty keywords without writing different articles. Instead of optimizing your landing page for a single keyword, you may start to rank for long tail variants of your keyword and significantly increase your website traffic.

Importance of Keyword Clustering Tools for SEO

The ultimate goal of SEO is to maximize backlink opportunities, and keyword clustering tools can help you do that.

Not only will you be able to better target your efforts, but you’ll also see improvements in traffic and conversion rates. In order to grow your business online, you must incorporate keyword clustering into your SEO strategy.

However, it’s an analytical work. You’ll need to spend a good time researching keywords, combining them in groups, and arranging them in Excel sheets. 

Whenever you perform this process manually, you are likely to make mistakes and get overwhelmed. You may combine words with different search intent and non-matching topical themes, resulting in an incorrect grouping. Even with minimal mistakes, organizing thousands of keywords manually might even take a few days.

Keyword Clustering tools are designed to complete all these tasks error-free and faster than humans.

Benefits of Using Keyword Clustering Tools

To summarise, here are a few reasons why keyword clustering tools are important for SEO:

Automation: Keyword clustering tools automate the keyword research process. Thereby saving hours of manual work and allowing you to even delegate tasks to SEO trainees.

Focused SEO: Keyword clustering tools ensure you make targeted and relevant content creation, link building, and other SEO-related activities.

Relevancy: Tools help identify relevant keywords for the content being created and provide strategic clarity for grouping them together. 

Saves time: Manual keyword grouping is time-consuming and ineffective when you have to understand user intent at scale.

Eliminate mistakes: Grouping keywords manually is prone to making mistakes. Missing search intent, keyword confusion, and lack of knowledge of synonyms are some of the common reasons for wrong grouping.

Unlimited Keyword Support: Most keyword clustering tools support 5000-1000 keywords in the free version. With a minimal subscription fee, you can scale the number to 10000 keywords.

And many more reasons clearly state the importance of keyword clustering tools for SEO. It’s time to explore some of the most widely used keyword clustering tools available in the market.

Let’s get started.

KeywordInsights.AI is a content marketing platform that uses artificial intelligence (AI) for keyword research, creating content briefs, and keyword clustering for better SEO results.

The platform has a keyword discovery tool wherein you simply need to add a keyword. Then, the keyword discovery tool generates hundreds of similar terms instantly. You can use these keywords in their keyword clustering tool and use all of them as targeted keywords on a single page.

Keyword Clustering tool removes the pain of finding and grouping similar words to rank for. The platform uses live search result pages to generate a group of keywords. These are easy to rank, have low volume, and low difficulty. And therefore, it can be used for creating single-piece content instead of creating separate pages.


NeuralText is an online content planning platform that offers tools to automate your content marketing tasks like keyword discovery, SEO analysis of your website, and even generating text with the help of artificial intelligence.

With the help of the NeuralText platform, you can complete your keyword research by finding long-tail keyword suggestions. Once you get the results, you can quickly group all the suggestions using their keyword clustering tool. 

NeuralText Clustering Tool integrates seamlessly with popular tools like SEMRush and Ahrefs. You can easily import keyword reports from these platforms and upload them on this tool. After you set the country and language, you get keyword clusters based on geo-located SERP rankings.


SerpStat is an SEO management platform widely popular for features like backlink analysis, keyword research, SEO keyword rank tracking, competitor analysis, and site audits.

Like many other SEO features, it offers a keyword clustering tool that automatically groups up to 50,000 keywords according to SERP similarity. SerpStat is easy to use, as it asks you to add the required parameters for grouping. Once done, it returns a list of created clusters and a list of keywords included in each cluster.

You can compare the keyword volumes and check their inter-connected strength by matching URLs in the top 30 search results. You can even add, delete and move the keywords to other clusters and export them as per your requirement for further processing.


Thruuu is a free SEO scrapping tool that helps content marketers with copywriting activities after analyzing Google search engine results pages. At a given time, it gives you a glance at the top 100 pages of Google organic results, including on-page SEO data.

With the help of this data, you can get insights from ranking results and build better content outline briefs. Using Thruuu’s Topic Clusters feature, you can group semantic keywords at scale. 

Just like other keyword clustering tools, Thruuu also begins creating keyword groups after you upload a keyword CSV file. It groups keywords automatically based on search intent, and you can use these insights to streamline your content planning process. 


Topvisor is a popular SEO and PPC tool for performing standard SEO practices like keyword research, checking the rankings in SERPs, and analyzing the performance of websites based on various ranking parameters.

Using Topvisor’s clustering tool, you can send automated queries to search engines based on the keywords you entered. It matches web pages from search results to each keyword in the top-10 search results. According to the number of matching URLs in the applied search engine, it compares this keyword with those for the other Top-10 keywords.

In case the search engine returns similar web pages for different keywords and there are many matches for them, the keywords will be clubbed together.

SE Ranking

SE Ranking is an all-in-one SEO platform that provides plenty of SEO-related tools for tracking keywords, backlinks, SEO audits, monitoring, and reporting website performance in search results pages.

The platform also has a keyword grouper feature that precisely groups all the similar keywords so you can plan a better SEO architecture for your website. 

By using SE Ranking’s keyword grouper, you’ll be able to expand your semantics and identify synonyms as well as closely-related terms. You can use these identified keywords in your title and description tags to improve SEO and rank higher in search results.

KeyWI is an AI-based content marketing platform that helps marketers easily create SEO-proof content and check its performance. With its AI research algorithm, the tool eliminates the need for time-consuming keyword research and competitor analysis. 

One of KeyWI’s features is a topic clustering tool that groups keywords that look similar to search engines. It saves you a lot of time that marketers usually spend on Excel sheets. KeyWI uses data science mathematical techniques like Natural Language Processing for grouping keywords. 

You can get started by putting your keywords in KeyWI in a CSV file format along with their search volumes. KeyWI will use these keywords and gather search engine data for each of them. Lastly, KeyWI will group the keywords based on the found relations between all keywords so you can sprinkle them better for ranking website pages.


KeyClusters is a dedicated keyword grouping software that uses real-time SERP data to create topic-related keyword clusters. You can use these clusters on targeted pages and find ways to interlink them for better rankings in search engines.

Using the KeyClusters tool is simple. You can start by uploading a CSV file of keywords from popular keyword tools like Ahrefs, SEMRush, or custom files. The platform will run your keywords through search engines like Google and analyze the top 10 ranking pages. Once completed, it groups keywords that have three or more of the same pages in common.

And within a few minutes, you’ll have an Excel file with all keywords clustered into topical format groups. The good part is you can use as many keywords as you want because it can efficiently handle loads of keywords and provides results in real-time without blocking queries.

Final Words

Now that you know some of the prominent keyword clustering tools, it’s okay to have some confusion about which one to use.

If you are starting to optimize your old content and want to experiment with keyword grouping, go with the free tools first. It will help you get a brief idea of the process and the steps you may need to start using paid tools.

This SEO strategy will improve your website visibility and help you rank higher in the search results.

Next, check out the best rank tracking and keyword manager SEO tools.

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  • Rahul
    Rahul is a digital marketer and web developer. He keeps learning about new web development trends and helps people do online business. In his free time, he enjoys watching YouTube videos and reading psychology books.

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